"There are 30 members of NATO, and we have given all of them Article 5," said Mary Elise Sarotte, a professor of history at Johns Hopkins University and author of Not One Inch: America, Russia ...

If Russia were determined to have attacked the territory of a member state, the focus would then shift to Article 5, the cornerstone of the founding treaty of NATO. The alliance was created in ...

An Article 4 discussion would, however, be a necessary first step toward a NATO decision to invoke Article 5, the treaty’s core provision, which defines NATO’s commitment to collective self ...

Two missiles from the Ukrainian war theater struck Poland, a NATO member, on Tuesday, setting off a frenzy over the Western alliance’s mutual defense mechanism known as Article 5. Article 5 of ...

Ukraine and its allies are working on security guarantees that offer "the protection that Article 5 provides to NATO countries," President Volodymyr Zelensky said on April 25. U.S., U.K., German ...

BERLIN, Nov 27 (Reuters) - Russia's acts of sabotage against Western targets may eventually prompt NATO to consider invoking the alliance's Article 5 mutual defence clause, the head of Germany's ...

it could prompt NATO to invoke what’s known as Article 5, a collective-defense mechanism that NATO itself describes as “the very heart of NATO’s founding treaty.” Rhetorically ...